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Beryl, Quartz (Var: Smoky Quartz), Microcline

Locality: Homestake Pass, Boulder Batholith, Jefferson Co., Montana, USA

Beryl variety aquamarine as inclusions in euhedral smoky quartz; the smoky quartz crystals are in parallel growth on a single, corroded microcline crystal. The beryl is abundant in the center quartz, but where it was grown in between each crystal it has been dissolved. This specimen was found in float below the outcrop it came from, and was assembled from several pieces. It measures 13.0 x 10.5 x 5.0 cm overall; self-collected.

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Photo added: 5th Jan 2010

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